president obama now holed up for the next couple of days in nevada sparring with john kerry, his debate partner, to get ready for this first presidential debate on wednesday. both sides lowering expectations. the an aide for obama said romney will be prepared and aggressive. an aide for romney ss he should not be underestimated. here's what both candidates had to say about wednesday. >> what i'm most concerned about is having a serious discussion about what we need to do to keep the country growing and restore security for hard working americans. >> the american people will listen carefully to the conversation that's held over three debates and the fourth with the vice presidential debate, and they'll decide who can help their family, who will be able to get our economy going in the way it could be going, and they'll make the decision based on what they believe is in the best interests of the country and their own family. >> reporter: both sides already planning their post-debate rallies. mitt romney and his running mate paul ryan will be in virginia on thursday. president obama is stay